2.6.29.4
These are separate and unrelated tasks. To check the version of the running kernel in Linux, use the command uname -r. To upgrade the kernel, either use your distro's package manager (if any) to update the system, or download and compile the Linux kernel source.
No, it is unix-based but Linux is a kernel not an operating system.Ubuntu,Linux Mint,Debian,and puppy Linux,ect. are OS's that use the Linux kernel.
First of all, it's GNU/Linux not just Linux(which is the name of the kernel). Second, most versions of GNU/Linux are free. Lastly, the most popular version is Ubuntu.
Kindle Fire HDs use a customized version of Android, which is a mobile operating system running on the Linux kernel with a non-GNU userland.
Red Hat Linux was discontinued in 2003, and replaced with "Red Hat Enterprise Linux", and the free, home-use version "Fedora". Updates were discontinued for Red Hat after 2006.
Ubuntu uses the Linux kernel, which is a monolithic kernel with loadable modules.
They are both long obsolete, so there is no difference between them as to whether you should use them or not. The major changes Fedora 16 made as compared to Fedora 15 were: GRUB2 became the default bootloader The HAL daemon was removed, in favor of udisks and udev The kernel version was upgraded to 3.1
Linux is only a Kernel (Operating System). Different Flavours of linux have different user programs on top of the same linux kernel. A high level example : Ubuntu has the user program(package) GNOME while Kubuntu has KDE, whereas both ubuntu & Kubuntu use the same Linux Kernel.
2.4.7
I have used various distributions of Linux such as RedHat/Fedora, SuSE and ubuntu and somehow I find Ubuntu the easiest amongst these in terms of HCI. Ubuntu has got good community support, great package management system and its very easy to use.
Red Hat Linux was discontinued in 2004 in favour of Red Hat Enterprise Linux for enterprise environments. However, Red Hat Linux still exists as "Fedora", free for home use, developed by "Fedora Projects", though the entire line is no longer commercial and only supported by the Linux community.
Linux is a monolithic kernel. Some operating systems with a microkernel use Linux as a process for providing drivers, but this is irrelevant to mainstream Linux.